Реализация $GLOBALS через ArrayObject

class Globals extends \ArrayObject
{
    public function __construct(array $array = [])
    {
        unset($array['GLOBALS']);
        $treba = array_replace([
            '_GET' => [], 
            '_POST' => [],
            '_SERVER' => [],
            '_FILES' => [],
            '_COOKIE' => [],
            '_SESSION' => [],
            '_ATTRIBUTES' => []
        ], $array);
        parent::__construct([
            '_SERVER' => new \ArrayObject($treba['_SERVER']),
            '_GET' => new \ArrayObject($treba['_GET']),
            '_POST' => new \ArrayObject($treba['_POST']),
            '_COOKIE' => new \ArrayObject($treba['_COOKIE']),
            '_SESSION' => new \ArrayObject($treba['_SESSION']),
            '_FILES' => new \ArrayObject($treba['_FILES']),
            '_ATTRIBUTES' => new \ArrayObject($treba['_ATTRIBUTES'])
        ]);
    }
    public function __get($name)
    {
        $var = '_' . strtoupper($name);
        if ($this->offsetExists($var)) {
            return $this->offsetGet($var);
        }
        return false;
    }
    public function __set($name, $value)
    {
        $var = '_' . strtoupper($name);
        if ($this->offsetExists($var)) {
            return $this->offsetSet($var, $value);
        }
        return false;
    }
}